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... This means in the early months of Trump's administration a single Republican House lawmaker's defection could at least temporarily derail Trump initiatives or other GOP-only legislation that does not have any Democratic support.

"No margin for error," Representative Guy Reschenthaler of Pennsylvania, a top House Republican vote-counter says of the need to keep members of the party in line.

Democrat Adam Gray, a former state assemblyman, defeated Republican incumbent John Duarte in California's 13th Congressional District, in the final US House race called by the Associated Press, made early Wednesday morning New York time.

House Speaker Mike Johnson and fellow Republicans will enter the new Congress holding a 220-215 majority in the 435-member House. It is a narrower majority than the current Congress, in which Republicans have often struggled to pass legislation.

The new GOP majority will quickly drop by a minimum of two seats.

Representative Mike Waltz of Florida " chosen by Trump as his national security adviser -- said he'll resign his House seat on Jan. 20, the day of Trump's inauguration. Another Floridian reelected on Nov. 5, Matt Gaetz, has said he won't even return to the House when it reconvenes for the next session on Jan. 3, although he withdrew from consideration as Trump's initial pick for attorney general. ...